Cutter for wrapping-thread.



W. KUNDE.

UUTTEB FOB WRAPPING THREAD.

APPLICATION IILED APR. 26, 1910.

Patented Feb. 28, 1911.

WALTHER KUNDE, OF DBESDEN, GERMANY.

CUTTER FOR WRAPPING-THREAD,

To all whom it may concern:

Be it known that I, VVALTHER KUNDE, a subject of the German Emperor, residing at Dresden, Germany, have invented a certain new and useful Cutter for Wrapping- Thread, of which the following is a specification.

This invention relates to devices for cut-- ting wrapping thread, and has for its object to provide a device of this kind which may be easily operated to cut the thread and which will at the same time have its cutting knife well protected to prevent accidental injury to or by the knife. To this end I have provided a fixed knife inclosed in a movable tube or casing having a slot therein, said casing being adapted to be moved by being engaged by a piece of thread passed into the slot thereof, whereby the thread and easing may be moved so as to bring the thread into contact with the cutting edge of the knife, the casing serving at the same time as a support for the thread.

In the accompanying drawing forming a part of this specification, Figure 1 is a central vertical sectional view of the device,

parts being shown in elevation, Fig. 2 is a side-elevation of the knife and the movable casing, and Fig. 3 is a detail view of a modified form of the device.

Similar characters of reference refer to like parts throughout the several figures of the drawing.

Referring more particularly to the drawing, the knife a is provided with a slanting cutting edge I) and a downwardly-extending shank 0, having a slotted lower end engaging in a vertical slot in a screw-p1ug cZ screwed into the lower part of a vertical recess in the pedestal or base f. A short tube 6 is rigidly secured in the upper part of said recess coaxial therewith. The knife a, is surrounded by a flat tube 9 provided with a reduced lower end It snugly and slidably received in the tube 6.

The shank 0 is surrounded by a spiral spring 2' bearing at its lower end upon the plug (Z and adapted to be pressed upon at its upper end by the tube 9, whereby said tube is pressed yieldably upwardly in such a position that the upper end of the reduced portion 71. engages under the knife a. One of the edges of the tube 9 is provided with an inwardly and downwardly inclined slot Specification of Letters Patent.

Application filed April 26, 1910.

Patented Feb. 28, 1911.

Serial No. 557,639.

in, said slot being located so that its inner end is just above the cutting edge 72 when the tube 9 is in its normal position.

When it is desired to cut a thread, the thread is passed into the slot 70 and caused to press downwardly on the lower face of said slot whereby the thread is held tightly and at the same time lowered against the cutting edge 5, thus severing the thread.

The modification shown in Fig. 3 operates in the same manner as the form illustrated in Figs. 1 and 2. The knife of this modification is, however, provided with two oppo sitely disposed cutting edges 6. The tube 9 is alsoprovided with oppositely opening slots is adapted to cooperate with the cutting edges 7) as described of the form illustrated in Figs. 1 and 2. With this arrangement of double slots it is possible to cut the thread on either side of the device without the trouble of passing the thread over from one side to the other.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In a device for cutting thread, the combination of, a fixed knife, a casing adjacent to and slidable relative to said knife and having an open-ended slot removed from the cutting edge of the knife when. the easing is in normal position, said slot having one end closed and disposed toward said cutting edge and adapted to pass the cutting edge when the casing is moved from its normal position, and means for holding the casing in normal position.

2. In a device for cutting thread, the com bination of, a fixed knife, a movable casing inclosing said knife and provided with a slot disposed at an angle to the cutting edge of the knife and being open at its part most remote from said cutting edge, said slot being removed from said cutting edge when the casing is in normal position, and means for yieldably holding the casing in normal position.

3. In a device for cutting thread, the com- I bination of, a pedestal having a broad flat-.

bottomed base, a knife fixed upright on said pedestal, a movable casing inclosing said knife and provided with a slot disposed at an angle to the cutting edge of the knife and being open at its art most remote from said cutting edge, sai slot being removed from said cutting edge when the casing is in normal position, and means for yieldably holding the casing in normal position.

4. In a device for cutting thread, the com bination of a pedestal having a vertically disposed recess therein a tube fixed in the upper part of said recess coaxial therewith, a slotted tube having a reduced portion slidable in said first-named tube, a knife disposed in said slotted tube and having a '1 shank disposed in said recess, and means for holding said slotted tube yieldably at its upward limit of movement.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing Witnesses.

VVALTHER KUNDE.

Witnesses:

ULYSSES J. BYWATER, CLARE SIMON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

